2016 · 替代规则（核心规则变体）
Duelling Rules For Old School Role Playing Games
An optional combat supplement for early editions of D&D and compatible games. It adds tactical dueling rules in which opponents maneuver to create and exploit openings, balancing aggression with caution and finesse to avoid deadly counter-strokes. Standard combat rules remain in effect except where these additions specify otherwise.
基于属性/数值（STR、CON、PER 等）等级制（获得经验值并升级）职业制（飞行员、巫师、科学家等）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Duelling Rules For Old School Role Playing Games
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。